Procomp B687 Manual page 21

B687
DIMM socket (DIMM1, DIMM2). The motherboard has a table-free (or
auto-bank) feature; the user can install DIMM into any bank. The two DIMM
Sockets permit system memory expansion from 8MB to 256MB. Each bank
provides a 64-bit wide data path. You can install 100MHz SPD RAM or
66MHz SD RAM into the motherboard, using your CPU clock to make the
selection.
If you want to install more memory and there are no sockets available,
you must remove some installed modules and replace them with the upgrade
modules.
If you have to do this, be sure to identify what type of memory is already
installed. In some cases, there may be a mix of module types. You can
confirm this by checking the configuration screen that appears while the
computer is starting up. Press the pause key to temporarily interrupt the start-
up so that you have more time to read the screen. When you' re done, press
any key to resume.
Remove the lowest performance and smallest size modules and replace
them with the upgrades.
BIOS
How to Install DIMM Modules on Motherboard
1. The SDRAM sockets are keyed with notches and the DIMMs are keyed
with cut-outs so that they cannot be installed incorrectly. Check that the
cut-outs on the DIMM edge connector match the notches in the SDRAM
socket. In other words, before inserting the DIMM, make sure the pin1 of
the DIMM matches with the pin1 on the DIMM socket.
SLOT1
DIMM1
DIMM2
20
168-pin DIMM Module